diff options
Diffstat (limited to 'drivers/infiniband/hw/mlx5/ah.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/ah.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/ah.c b/drivers/infiniband/hw/mlx5/ah.c index 745efa4cfc71..d090e96f6f01 100644 --- a/drivers/infiniband/hw/mlx5/ah.c +++ b/drivers/infiniband/hw/mlx5/ah.c @@ -64,7 +64,9 @@ static struct ib_ah *create_ib_ah(struct mlx5_ib_dev *dev, return &ah->ibah; } -struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) +struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr, + struct ib_udata *udata) + { struct mlx5_ib_ah *ah; struct mlx5_ib_dev *dev = to_mdev(pd->device); @@ -75,6 +77,27 @@ struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) if (ll == IB_LINK_LAYER_ETHERNET && !(ah_attr->ah_flags & IB_AH_GRH)) return ERR_PTR(-EINVAL); + if (ll == IB_LINK_LAYER_ETHERNET && udata) { + int err; + struct mlx5_ib_create_ah_resp resp = {}; + u32 min_resp_len = offsetof(typeof(resp), dmac) + + sizeof(resp.dmac); + + if (udata->outlen < min_resp_len) + return ERR_PTR(-EINVAL); + + resp.response_length = min_resp_len; + + err = ib_resolve_eth_dmac(pd->device, ah_attr); + if (err) + return ERR_PTR(err); + + memcpy(resp.dmac, ah_attr->dmac, ETH_ALEN); + err = ib_copy_to_udata(udata, &resp, resp.response_length); + if (err) + return ERR_PTR(err); + } + ah = kzalloc(sizeof(*ah), GFP_ATOMIC); if (!ah) return ERR_PTR(-ENOMEM); |